ACCESSWRITEHDS will, after closing any data file currently
in use, open the output .cha file in order to write the ScanData,
uncalibrated and calibrated, along with the configuration information. The
file name is derived from the date, with an extension .cha.
(If you restarted the session by reading the averaged data, the input
file is closed first since it is identical with the output file and
all files opened with the menu are read-only.) FITS
will ask for a star to be written in FITS format. You have to run CALIBRATEVISIBILITYSETCOMPLEX before that in order to set the
baseline phases.